P.15
2.7 Function of safety guard
2.7.1 Function of avoid overflow
When the water level is up to the abnormal height in the drum(the set warning level),
washing machines will automatically switch on drainage pump to drain by pressure
switch, even if the inlet valve failure which can not stop the inflowing water, the
washing machine will not be in the overflow. At the same time, the pressure switch will
feed back to control panel a signal of fault and the washing machine will alarm.
2.7.2 Function of avoid heating without water
When there is no water or not enough to submerge the heater, and at the same this
machine is in fault, the fuse in the heater will melt to cut off the heater and avoid danger.
2.7.3 Function of bubble checking
About wiping off bubble: When the water level is lower than level I during draining, the
2.INTRODUCTION OF PRODUCTS
spin function will start. If there is over much bubble in the drum, it will increase the
pressure in the drum and switch on the pressure switch , at the same time the PCB panel
begin the bubble checking function and clean it away.
